Ribbons such as New Web Application, Properties on Service Applications (such as Managed Metadata Service)

New Web Application Icon Greyed Out

 

The solution is to run ‘Central Administration’ as Administrator. Off course this being a 2012 R2 server i disabled the UAC prompting but this didn’t┬ástop the ‘Run as Administrator’ prompt.

Run this powershell script to disabled the Run as Administrator prompt